/*
 * Copyright 2015 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.apiman.gateway.engine.es;

/**
 * Util methods.
 *
 * @author eric.wittmann@redhat.com
 */
public class ESUtils {

    private ESUtils() {
    }

    /**
     * Gets the root cause of an exception.
     * @param e the root cause
     * @return the throwable
     */
    public static final Throwable rootCause(Throwable e) {
        Throwable cause = e;
        while (cause.getCause() != null) {
            cause = e.getCause();
        }
        return cause;
    }

}
